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SN74AVCH16T245: The difference between SN74AVCH16T245 and SN74AVC16T245

Part Number: SN74AVCH16T245
Other Parts Discussed in Thread: SN74AVC16T245, SN74AXC8T245, SN74AUC16244

Hi Team,

May I ask:

  • What is the difference between SN74AVCH16T245 and SN74AVC16T245? Only the input voltage?
  • Can SN74AVCH16T245 support VCCA=VCCB=1.2V?


  • The "H" indicates bus-hold circuits. This is the only difference.

    Section 1 of the datasheet says:

    Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.2 V to 3.6 V Power-Supply Range

  • Hi,

    As Clemens mentioned, the H refers to a bus-hold circuitry built into the device.

    Can I also recommend using two of the SN74AXC8T245. This is an 8 bit version of the device but the AXC family is the newer and better version of the AVC family.

    Yes you can do 1.2V to 1.2V however this is a border line condition for the AVC devices which is why I am recommending the AXC.

    However if you are doing 1.2V to 1.2V, have you thought about just using a buffer instead of a voltage translator? Maybe SN74AUC16244?